Question # 1

There is no integer n for which 3ⁿis

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Odd

even

Natural

Prime

If A ⊆ B then A ∪ B is

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A

B

A'

A ∩B

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The first three terms in the expansion of (1 - x)^-3are

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1 + 3x + 6x²

1 - 3x + 6x²

-3 - 3x - 6x²

1 - 3x - 6x²

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- cot 4x + c

cot 4x + c

tan 4x + c

- tan 4x + c

Vector i =

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[1,0]

[0,1,0]

[0,0,1]

None of these

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cos(a +β)-cos(a-β) = _______;

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2cosa cosβ

2sina cosβ

-25 in a cosβ

-2sin a sinβ

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The angles of elevation of the top of a tower at the top and the foot of a pole of height 10 m are 30° and 60° respectively. The height of the tower is

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10 m

15 m

20 m

None of these

If f(x) = x²then f(0) is

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0

1

2

none of these

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